/**
 * Copyright 2011 Renato de Jesus Manzoni
 * 
 * SED - Software Engineering and Dependability Research Group
 * 
 *     http://www.sed.ic.unicamp.br/
 * 
 * Distributed Systems Laboratory (LSD) in the Institute of Computing (IC) at University of Campinas (UNICAMP)
 * 
 *     http://www.lsd.ic.unicamp.br/
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package br.unicamp.ic.lsd.wscaa;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import br.unicamp.ic.lsd.wscaa.concurrent.ConcurrentExceptionSync;

/**
 * @author Renato de Jesus Manzoni <rjmanzoni@gmail.com>
 *
 */
public class WSCAManager {

	private static WSCAManager instance;
	List<Object> notifyList;
	private boolean doneExceptionHandling;
	
	public static WSCAManager getInstance(){
		if(instance == null)
			instance = new WSCAManager();
		return instance;
	}
	
	private WSCAManager() {
		refresh();
	}
	
	public void addNotifyMe(Object me){
		notifyList.add(me);
	}
	
	public void notifyObjects(){
		this.doneExceptionHandling = true;
		for (Iterator<Object> iterator = notifyList.iterator(); iterator.hasNext();) {
			Object obj = (Object) iterator.next();
			synchronized (obj) {
				obj.notifyAll();
			}
		}
	}
	
	public void start(){
		//TODO acho que seria mais interessante definir uma interface para invoka o metodo que implementa ela. Isso eh para desvincular a estrategia de sincronizacao
		ConcurrentExceptionSync.getInstance().refresh();
		refresh();
	}
	
	private void refresh() {
		doneExceptionHandling = false;
		if(notifyList == null)
			notifyList = new ArrayList<Object>();
		else
			notifyList.clear();
	}

	public boolean hasDoneExceptionHandling(){
		return doneExceptionHandling;
	}
	
}
